GOYOJO 0.5L Mini Scuba Tank Portable Diving Air

GOYOJO 0.5L Mini Scuba Tank Portable Diving Air. Portable Scuba Oxygen Bottle: Can be submerged for about 5~10 minutes, can be used for adult surface breathing about 66 mouthfuls of air, different underwater depths, the available time also varies. Bottle mouth design: 1 - luminous instrument, deep pressure resistance visible at a glance, underwater depth of 80 meters is still clearly visible. 2 - pressure relief valve to release pressure, press to release the pressure of air venting. 3 - air filter to breathe pure air, multiple filter design to breathe pure air. Material: Aluminium. Use: Oxygen. Model: 0.5L. Capacity: 0.5L.